make sounds (beep) with c++

Print the special character ASCII BEL (code 7)

cout << '\a';

Source

If you're using Windows OS then there is a function called Beep()

#include <iostream> 
#include <windows.h> // WinApi header 

using namespace std;

int main() 
{ 
    Beep(523,500); // 523 hertz (C5) for 500 milliseconds     
    cin.get(); // wait 
    return 0; 
}

Source: http://www.daniweb.com/forums/thread15252.html

For Linux based OS there is:

echo -e "\007" >/dev/tty10

And if you do not wish to use Beep() in windows you can do:

echo "^G"

Source: http://www.frank-buss.de/beep/index.html

alternatively in c or c++ after including stdio.h

char d=(char)(7);
printf("%c\n",d);

(char)7 is called the bell character.

There are a few OS-specific routines for beeping.

• On a Unix-like OS, try the (n)curses beep() function. This is likely to be more portable than writing '\a' as others have suggested, although for most terminal emulators that will probably work.

• In some *BSDs there is a PC speaker device. Reading the driver source, the SPKRTONE ioctl seems to correspond to the raw hardware interface, but there also seems to be a high-level language built around write()-ing strings to the driver, described in the manpage.

• It looks like Linux has a similar driver (see this article for example; there is also some example code on this page if you scroll down a bit.).

• In Windows there is a function called Beep().